280=4/7*x

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Solution for 280=4/7*x equation: 



280=4/7x

We move all terms to the left:

280-(4/7x)=0



Domain of the equation: 7x)!=0

x!=0/1

x!=0

x∈R



We add all the numbers together, and all the variables

-(+4/7x)+280=0

We get rid of parentheses

-4/7x+280=0

We multiply all the terms by the denominator


280*7x-4=0

Wy multiply elements

1960x-4=0

We move all terms containing x to the left, all other terms to the right

1960x=4

x=4/1960

x=1/490

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